A 27-year-old Taunton woman was busted for dealing oxycodone in the parking lot of BJ's Wholesale Club, and her New Hampshire customer was charged with possession, after police said plainclothes detectives caught them in the act late Wednesday morning.

TAUNTON — A 27-year-old Taunton woman was busted for dealing oxycodone in the parking lot of BJ’s Wholesale Club, and her New Hampshire customer was charged with possession, after police said plainclothes detectives caught them in the act late Wednesday morning.

Melanie Medeiros, 235 Tremont St., was charged with distribution of a Class B controlled substance and possession with intent to distribute the prescription painkiller oxycodone.

Cops said the two met up in the Bay Street parking lot across the street from the entrance to Myles Standish Industrial Park. Police said the large parking area in the plaza recently has been the scene of drug-related arrests.

Medeiros allegedly became argumentative and uncooperative after police swooped in and told her she was under arrest. They also said she made furtive movements indicating she might be shoving something down the front of her pants before they were able to handcuff her.

Police said they checked the back seat of the cruiser into which she was placed to make sure there was nothing there. But by the time they arrived at police headquarters, they said they found a baggie on the floor containing 42 and a half oxycodone pills with a street value of nearly $1,500.

Police also said they confiscated $4,510 in cash from Medeiros.

When they asked why she had come to BJ’s, Medeiros allegedly told police she bought baby formula for a friend from Colorado. She then, they said, claimed she simply met Plunkett in order to give him a hug.